* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: Arial, sans-serif; background: linear-gradient(135deg, #1e3c72, #2a5298); min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.encode { background: #fff; padding: 30px; border-radius: 15px; width: 450px; }
.encode h1 { color: #1e3c72; text-align: center; margin-bottom: 15px; }
#input { width: 100%; height: 80px; padding: 12px; border: 2px solid #ddd; border-radius: 10px; font-size: 14px; margin-bottom: 10px; }
.buttons { display: flex; gap: 10px; margin-bottom: 10px; }
.buttons button { flex: 1; padding: 12px; background: #1e3c72; color: #fff; border: none; border-radius: 8px; cursor: pointer; }
#result { background: #f5f5f5; padding: 15px; border-radius: 10px; word-break: break-all; }